Hello candidate,

the first thing which I would like to advise you is that you should have the self belief that you can do great work if you are determined enough.

As you have Scored about 85% in a class 11th, then it means that you are a good student and you need persistent practice, and hard work. You should prepare for all India exams such as the joint entrance examination, BITSAT, etc. for persuing engineering from a good college.

All the best!!